Improvement in medicine-droppers



D. WARNER,

Medicine-Mappers.

NOJBLOGG, Patented May 19,1874.

Wiinesses. V Inventor;

' b Per fm Attorneys.

NrrEn STATES PATENT OFFICE.

DENNIS WARNER, OF LONDON, OHIO.

IMPROVEMENT IN MEDlCiNE-DROPPERS.

Specification forming part of Letters Patent No. 151,066, dated May 19,1874; application filed March 15, 1873.

To all whom it may concern:

Be it known that I, DENNIs WARNER, of London, in the county of Madisonand the State of Ohio, have invented a new and ImprovedMedicine-Dropper; and I do declare the following to be a full, clear,and exact description of the same, reference being had to theaccompanying drawing forming a part of this specification, in which thefigure is a longitudinal section of my invention.

The invention consists in a medicinedropper, constructed and applicableas hereinafter fully described.

A represents the rubber bulb that clasps the neck of the bottle with itsopen end, and B the dropper, dispenser, or discharge-tube placed at oneside and near the front end. The latter has walls parallel on the innerside throughout its length, the end being a flat surface or a littleconcave, and at right angle to the axis of the bulb A. This is the onlyshape that will enable a tube to dispense uniform drops, as there is atendency in fluids to spread 011 oval or tapered surfaces.

The ordinary gum nipple on the month of a vial is totally unfit fordispensing drops, because the moist surface widens and the dropsaccumulate until two, three, or four will be discharged at once. Inconsequence, the patient often gets an overdose, and sometimes by itloses his life. In my tube all danger is removed, because the fiuid willnot pass the angle formed by the flat end and the wall of the tube.Hence the end of the tube is the whole dropping-surface, is always thesame, and renders the drops uniform.

My device drops by pressure, the same-sized tube and caliber droppingequally well all degrees of fluidity, from sirups t0 ether andchloroform; also enables the operator to time the frequency of thedrops, so as to make an accurate count.

The bulb serves for a reservoir when the medicine is poured from thevial, and from which it is forced by pressure through thedischarge-tube. The bulb A is a tapered tube, which was adopted forconvenience, so that the same may embrace all sizes of vials in whichprescriptions are generally put up.

Hz ving thus described my invention, what I claim as new is- The rubberbulb A, having dropper B, with parallel inner walls, and with the endflat or concave, and at right angles to the axis of bulb, as and for thepurpose specified.

DENNIS WARNER.

Witnesses: B. BLAKE,

AMELIA FoUcH.

